Application Error Classnotfoundexception Loader.class
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Applet error ClassNotFoundException; Reload works up vote 4 down vote favorite I browse to an html page with an applet tag. The applet tag refernces two signed jars. I receive two Security Warning dialogs indicating the revocation status cannot be checked, accept the risk, and click Run for both of them. The browser displays an error gif that says "Error: click for details. I click. The Application Error dialog says ClassNotFoundException and the name of the class, and displays three options. I click (1) Details and see the Java Console with the menu but no errors. I click (2) Ignore with no apparent effect. I click (3) reload and the applet loads and runs properly. I have the latest java security update. This happens in Chrome and FireFox. I've signed the certificate using a Certificate from my Acitve Directory Certificate Server, I added the site to my list of trusted sites, and the CA certificate to the list of CA certs in the Java Control panel. I'm glad it works in the end but would like to avoid having to click Reload each time. Can anyone suggest what I might do differently? java applet classnotfoundexception share|improve this question edited Jan 31 '14 at 1:48 Andrew Thompson 137k19130250 asked Jan 30 '14 at 19:31 Will 213 Out of curiosity do you have Trusted-Library: true to the manifest file in the jars? –Display Name is missing Feb 18 '14 at 0:22 I didn't but do now. Unfortunately, no change. Thanks for the suggestion. –Will Feb 18 '14 at 5:41 I've tested using Windows 7, java build 1.7.0_17-b02 (x64) and Windows 8.0 build 1.7.0_51-b13 and the results are the same. –W
Guides Zones | Agile Big Data Cloud Database DevOps Integration IoT Java Mobile Performance Web Dev Let's be friends: How to Resolve java.lang.ClassNotFoundException by Pierre - Hugues Charbonneau · Nov. 23, 12 · Java Zone Like (1) https://dzone.com/articles/how-resolve-2 Comment (0) Save Tweet {{ articles[0].views | formatCount}} Views Edit Delete {{ https://social.msdn.microsoft.com/Forums/en-US/415fe050-340f-4d8b-807b-0b26d58132cd/javalang-class-classnotfoundexception?forum=webgadgetdevelopment articles[0].isLocked ? 'Enable' : 'Disable' }} comments {{ articles[0].isLimited ? 'Remove comment limits' : 'Enable moderated comments' }} Join the DZone community and get the full member experience. Join For Free Check out this8-step guideto see how you can increase your productivity by skipping slow application redeploys and by implementing application profiling, as you application error code! Brought to you in partnership with ZeroTurnaround. This article is intended for Java beginners currently facing java.lang.ClassNotFoundException challenges. It will provide you with an overview of this common Java exception, a sample Java program to support your learning process and resolution strategies. If you are interested on more advanced class loader related problems, I recommended that you review my article series on java.lang.NoClassDefFoundErrorsince these Java exceptions application error classnotfoundexception are closely related.java.lang.ClassNotFoundException: Overview As per the Oracle documentation, ClassNotFoundExceptionis thrown following the failure of a class loading call, using its string name, as per below:The Class.forName methodThe ClassLoader.findSystemClass methodThe ClassLoader.loadClass method In other words, it means that one particular Java class was not found or could not be loaded at “runtime” from your application current context class loader. This problem can be particularly confusing for Java beginners. This is why I always recommend to Java developers to learn and refine their knowledge on Java class loaders. Unless you are involved in dynamic class loading and using the Java Reflection API, chances are that the ClassNotFoundException error you are getting is not from your application code but from a referencing API. Another common problem pattern is a wrong packaging of your application code. We will get back to the resolution strategies at the end of the article.java.lang.ClassNotFoundException: Sample Java program Now find below a very simple Java program which simulates the 2 most common ClassNotFoundException scenarios via Class.forName() & ClassLoader.loadClass(). Please simply copy/paste and run the program with the IDE of your choice (Eclipse IDE was used for this example). The Java program allows you to choose between problem scena
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